n.1 Chem. a substance that, without itself undergoing any permanent chemical change, increases the rate of a reaction.
2 a person or thing that precipitates a change.
Etymology: as CATALYSIS after analyst
n.1 Chem. a substance that, without itself undergoing any permanent chemical change, increases the rate of a reaction.
2 a person or thing that precipitates a change.
Etymology: as CATALYSIS after analyst
Oxford English vocab. Оксфордский английский словарь. 2012